A water treatment system for a refrigerator and a control method thereof

Abstract

This application discloses a refrigerator water treatment system and control method. The refrigerator water treatment system includes an impurity filter, a water storage box, a water pump III, a sterilization filter module, a valve III, a humidifier, a defrost water preheating box, a water pump IV, a hot water defrosting nozzle, a defrost water collection tray, a water pump I, a valve II, a condenser spray nozzle, a spray water collection tray, an auxiliary evaporation dish, a water pump V, and a condenser cleaning mechanism. An external water source supplies water to the water storage box via valve I and the impurity filter. The water storage box is connected to the sterilization filter module via water pump III, and then to the humidifier via valve III. The sterilization filter module is connected to the hot water defrosting nozzle via water pump IV. Defrost water is collected in the defrost water collection tray. The defrost water preheating box is connected to the impurity filter via water pump I. The water storage box is connected to the condenser cleaning mechanism via water pump V, and is connected to the condenser spray nozzle via valve II and water pump II. This application can filter impurities and collect defrost water for reuse, ensuring the normal operation of the condenser.

Description

Technical Field

[0001] This invention relates to the field of water treatment system technology, and in particular to a refrigerator water treatment system and control method. Background Technology

[0002] As a commonly used refrigeration and preservation device in both home and commercial settings, the performance optimization and functional improvement of refrigerators have always been a key focus of industry research and development. Currently, most mainstream refrigerators on the market adopt air-cooling technology, while also needing to meet core requirements such as evaporator defrosting, condenser heat dissipation, and preservation of the refrigerator compartment. The stable realization of these requirements is closely related to the treatment and rational utilization of water.

[0003] However, existing refrigerators have many problems that urgently need to be solved in actual use: First, when used in high humidity environments, the defrost water produced by the evaporator is difficult to evaporate in time and tends to remain inside the system; Second, the strong airflow circulation in the air-cooled refrigerator compartment can easily cause food to lose moisture quickly, resulting in food drying out and failing to meet the requirements for good preservation; Third, the heat dissipation efficiency of the finned condenser decreases under high temperature conditions, making it prone to high-temperature failures and affecting the refrigerator's cooling performance; Fourth, after long-term use, the surface of the finned condenser is prone to dust accumulation, leading to a significant reduction in heat exchange efficiency and thus worsening the overall energy consumption; Fifth, after the evaporator frosts, it needs to rely on defrost heating wires for defrosting, which consumes a lot of energy and does not conform to the trend of energy conservation. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a refrigerator water treatment system and control method to achieve the goals of filtering impurities, collecting and reusing defrost water, and ensuring the normal operation of the condenser.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a refrigerator water treatment system, comprising an impurity filter, a water storage box, a water pump III, a sterilization filter module, a valve III, a humidification device, a defrost water preheating box, a water pump IV, a hot water defrosting nozzle, a defrost water collection tray, a water pump I, a valve II, a condenser spray nozzle, a spray water collection tray, an auxiliary evaporation dish, a water pump V, and a condenser cleaning mechanism; an external water source supplies water to the water storage box via valve I and the impurity filter; the water storage box is connected to the sterilization filter module via water pump III, and then to the humidification device via valve III; the sterilization filter module is connected to the hot water defrosting nozzle via water pump IV; defrost water is collected via the defrost water collection tray; the defrost water preheating box is connected to the impurity filter via water pump I; the water storage box is connected to the condenser cleaning mechanism via water pump V, and is connected to the condenser spray nozzle via valve II and water pump II; the spray water collection tray simultaneously collects wastewater from condenser cleaning / spraying; the spray water collection tray is connected to the auxiliary evaporation dish.

[0006] By adopting the above technical solutions, the impurity filter can filter impurities from external water sources, preventing blockage of subsequent water circuit components; defrost water is collected by the defrost water collection tray, and then reused by the defrost water preheating box and water pump I back to the impurity filter, realizing defrost water recycling and reducing dependence on external water replenishment; the water storage box centrally supplies water to the humidification device, condenser cleaning mechanism and spray nozzles, improving water use efficiency; the sterilization filtration module can purify the humidification water, ensuring refrigeration hygiene; the spray water collection tray collects condenser cleaning / spray wastewater and connects it to the auxiliary evaporation dish, avoiding wastewater residue and providing support for stable system operation.

[0007] Furthermore, the condenser cleaning mechanism includes a cleaning component and a power component. The cleaning component includes a fixed frame, a guide rod, a movable seat, a spray pipe, and a cleaning roller brush. The fixed frame is located on one side of the condenser body, and there are two of them arranged symmetrically. The guide rod is horizontally arranged and fixed between the two fixed frames. The movable seat is set on the guide rod and slidably connected to it. The spray pipe is set on the movable seat, and the side wall of the spray pipe is provided with multiple spray holes evenly distributed about its axis. The spray pipe is connected to the outlet end of water pump V through a rotary joint and a hose. The cleaning roller brush is rotatably mounted on the movable seat. The power component is set on the fixed frame and is used to drive the movable seat to reciprocate along the guide rod.

[0008] By adopting the above technical solution, the user can drive the movable seat to reciprocate along the guide rod through the power component. The spray pipe and cleaning roller brush move synchronously with the movable seat. The spray pipe is connected to the outlet of water pump V through a rotary joint and hose, thereby providing a water source for the spray pipe. The water flowing into the spray pipe is sprayed onto the condenser under the high pressure of water pump V and the centrifugal force of the spray pipe. The cleaning roller brush then scrubs the fins of the condenser. The spray pipe and the cleaning roller brush work together to efficiently clean the finned condenser and ensure the normal use of the condenser.

[0009] Furthermore, the power assembly includes a motor and a reciprocating screw. The motor is fixed on one of the fixed brackets; the reciprocating screw is rotatably mounted between the two fixed brackets, passes through the movable seat and is threadedly connected to it, and one end of the reciprocating screw is fixed to the output end of the motor.

[0010] By adopting the above technical solution, after the user starts the motor, the motor drives the reciprocating screw fixed to its output end to rotate. Since the reciprocating screw is threadedly connected to the movable seat, and since the movable seat is slidably engaged with the guide rod, the movable seat slides along the reciprocating screw, which facilitates the spray pipe to cooperate with the cleaning roller brush to thoroughly rinse and clean the condenser.

[0011] Furthermore, the spray pipe is rotatably mounted on the bottom of the movable base. The fixed frame and the movable base are jointly provided with a linkage assembly for driving the spray pipe and the cleaning roller brush to rotate. The linkage assembly includes a rack, a transmission gear, a driven gear, a synchronous pulley, and a synchronous belt. The rack is fixed between the two fixed frames, the transmission gear is rotatably mounted on the bottom of the movable base and meshes with the rack, and the driven gear is fixedly sleeved on the spray pipe and meshes with the transmission gear. There are two synchronous pulleys, which are respectively fixedly sleeved on the central shaft of the spray pipe and the cleaning roller brush, and the synchronous belt meshes with both synchronous pulleys.

[0012] By adopting the above technical solution, during the process of the motor working and driving the movable seat to move along the reciprocating lead screw, the transmission gear is rotated and installed at the bottom of the movable seat, and the transmission gear meshes with the rack, so that the transmission gear rotates and drives the driven gear, spray pipe, synchronous pulley, synchronous belt and cleaning roller brush to rotate synchronously, so that the spray pipe and cleaning roller brush cooperate to thoroughly rinse and clean the condenser.

[0013] Furthermore, a clamping wheel is rotatably installed at the bottom of the movable seat, and the wheel surface of the clamping wheel abuts against the outer surface of the synchronous wheel; the spray hole is set at an angle, with the end closer to the axis of the spray pipe higher than the end of the spray hole away from the axis of the spray pipe.

[0014] By adopting the above technical solution, the setting of the clamping wheel increases the contact area between the synchronous pulley and the synchronous belt, ensuring the transmission effect between the spray pipe and the cleaning roller brush. The inclined setting of the spray holes reduces the probability of dirt cleaned by the cleaning roller brush splashing into the spray pipe, thus reducing the probability of spray hole clogging.

[0015] Furthermore, the lower end of the spray pipe is open, and a core column is installed inside the spray pipe to be inserted and matched with the lower end. The upper end of the core column is spherical and adjacent to the upper end of the spray pipe. The lower end of the core column is detachably connected to the lower end of the spray pipe, and the diameter of the core column increases from top to bottom.

[0016] By adopting the above technical solution, the setting of the core column reduces the space inside the spray pipe and shortens the distance between the inner wall of the spray pipe and the core column, ensuring the water flow pressure sprayed from the spray hole, which is conducive to washing away the dust on one side of the condenser fins.

[0017] Furthermore, a vent hole is provided through the core column, and a bottom cover is provided at its lower end. Multiple air jet holes communicating with the vent hole are provided on the side wall of the core column, and a one-way valve assembly is provided in each air jet hole. The diameter of the middle section of the air jet hole is larger than the diameter of its two ends. An overflow hole is provided on the inner wall of the middle section of the air jet hole, and a spherical curved surface is provided on the side of the middle section of the air jet hole near the axis of the core column. The one-way valve assembly includes a spring and a ball. One end of the spring is fixed to the side of the inner wall of the air jet hole near the axis of the core column, and the other end of the spring is fixed to the ball, and the ball is pressed against the spherical curved surface.

[0018] By adopting the above technical solution, after opening the bottom cover, the lower end of the core column can be connected to an external high-pressure air source. The high-pressure airflow enters the core column through the vent hole, then enters the jet hole, and breaks through the ball. The airflow is discharged from the overflow hole through the outlet end of the jet hole and blown towards the outside of the core column and between the spray pipe. This allows for the high-pressure airflow to clear any blockages and ensures the normal water spray cleaning function of the condenser cleaning mechanism.

[0019] Furthermore, an upper horizontal bar and a lower horizontal bar are fixed to the inner wall of the spray water collection tray. An upper rubber strip and a lower rubber strip are fixed to the bottom surface of the upper horizontal bar and the top surface of the lower horizontal bar, respectively. A filter screen is installed inside the spray water collection tray. The bottom surface of the upper rubber strip and the top surface of the lower rubber strip are pressed against the top surface and the bottom surface of the filter screen, respectively.

[0020] By adopting the above technical solution, both the upper and lower rubber strips are made of rubber material, and both have good elasticity, which ensures the stability of the filter screen during use. This allows the filter screen to fully perform its filtration function and ensures the purity of the condenser cleaning / spray wastewater.

[0021] Furthermore, a metal sheet is fixed to the bottom of the movable seat, and a scraper is fixed to the lower end of the metal sheet, with the top of the scraper abutting against the top surface of the filter screen.

[0022] By adopting the above technical solution, during the reciprocating screw movement of the movable seat, the metal sheet and scraper move synchronously with the movable seat, thereby enabling the scraper to clean the debris on the surface of the filter screen. The metal sheet has good elasticity, and during the scraping process, the metal sheet can vibrate within a certain range, thereby causing the scraper and filter screen to vibrate. The filter screen is in a state of vibration for a long time, which allows the debris in the mesh of the filter screen to be cleaned, further reducing the probability of filter screen blockage and affecting the normal use of the equipment.

[0023] This application also discloses a control method for a refrigerator water treatment system, including the following steps:

[0024] S1. When the system is turned on, valve I and the impurity filter are opened to replenish water according to the water level in the water storage box. After the water level reaches the standard, valve I is closed.

[0025] S2. Identify the defrost signal, turn on water pump IV to perform hot water defrosting, collect the defrost water into the collection tray, and adjust the water temperature through the defrost water preheating box and auxiliary heating wire. If not defrosting, maintain the current state.

[0026] S3. During the non-defrosting stage, when the humidity in the refrigerator compartment is lower than the set value, water pump III and valve III will be turned on to humidify. Once the target is reached, they will be turned off. This mode will be exited first during defrosting.

[0027] S4. Monitor the condenser temperature. If it meets the standard, turn on water pump II and valve II for spraying. The wastewater is collected in the collection tray and auxiliary evaporation dish. If the temperature does not meet the standard, maintain it.

[0028] S5. Activate the condenser cleaning mode at fixed intervals, turn on water pump VI, and turn off the auxiliary evaporator when the water level reaches 3 / 4. This mode has higher priority than spraying. Exit the mode during spraying.

[0029] By adopting the above technical solution, this control method ensures the system's water supply by replenishing the water storage tank as needed, turning on water pump IV for hot water defrosting and adjusting the water temperature to achieve defrosting, turning on humidification as needed when not defrosting, monitoring the condenser temperature and spraying as needed, turning on condenser cleaning at fixed intervals and reasonably setting mode priorities, which can stabilize system operation, achieve defrosting, ensure refrigeration humidity and maintain condenser performance.

[0030] In summary, the present invention has the following beneficial effects:

[0031] 1. In this application, the impurity filter can filter impurities from external water sources to prevent clogging of subsequent water circuit components; defrost water is collected by the defrost water collection tray and then reused by the defrost water preheating box and water pump I to the impurity filter, realizing defrost water recycling and reducing dependence on external water replenishment; the water storage box centrally supplies water to the humidification device, condenser cleaning mechanism and spray nozzle, improving water use efficiency; the sterilization filter module can purify the humidification water and ensure refrigeration hygiene; the spray water collection tray collects condenser cleaning / spray wastewater and connects it to the auxiliary evaporation dish to avoid wastewater residue and support the stable operation of the system;

[0032] 2. In this application, during the operation of the motor and the movement of the movable seat along the reciprocating lead screw, the transmission gear is rotated and installed at the bottom of the movable seat, and the transmission gear meshes with the rack, thereby causing the transmission gear to rotate and drive the driven gear, spray pipe, synchronous pulley, and cleaning roller brush to rotate synchronously, so that the spray pipe and the cleaning roller brush cooperate to thoroughly rinse and clean the condenser. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention;

[0034] Figure 2 This is a flowchart of the defrosting mode in an embodiment of the present invention;

[0035] Figure 3 This is a flowchart of the condenser spray mode in an embodiment of the present invention;

[0036] Figure 4 This is a flowchart of the condenser cleaning mode in an embodiment of the present invention;

[0037] Figure 5 This is a flowchart of water replenishment for the water storage box in an embodiment of the present invention;

[0038] Figure 6 This is a schematic diagram of the structure of the condenser cleaning mechanism and the condenser body in an embodiment of the present invention;

[0039] Figure 7 yes Figure 6 A structural diagram from another perspective;

[0040] Figure 8 yes Figure 7 Enlarged view of point A in the middle;

[0041] Figure 9 This is a planar schematic diagram of an embodiment of the present invention used to highlight the core post;

[0042] Figure 10 yes Figure 9 Enlarged view of point B in the middle;

[0043] Figure 11 yes Figure 9 Enlarged diagram of point C in the middle.

[0044] In the diagram: 1. Condenser cleaning mechanism; 11. Cleaning component; 111. Fixing frame; 112. Guide rod; 113. Movable seat; 114. Spray pipe; 1141. Spray hole; 115. Cleaning roller brush; 12. Power component; 121. Motor; 122. Reciprocating screw; 2. Rotary joint; 3. Linkage component; 31. Rack; 32. Transmission gear; 33. Driven gear; 34. Synchronous pulley; 35. Synchronous belt; 4. Pressing pulley; 5. Core column; 51. Vent hole; 52. Bottom cover; 53. Jet nozzle; 54. Spherical surface; 55. Overflow hole; 6. One-way valve assembly; 61. Spring; 62. Ball; 7. Spray water collection tray; 71. Upper horizontal bar; 72. Lower horizontal bar; 73. Upper rubber strip; 74. Lower rubber strip; 8. Filter screen; 9. Metal sheet; 91. Scraper; 10. Condenser body. Detailed Implementation

[0045] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0046] like Figure 1-11As shown in the figure, this application discloses a refrigerator water treatment system, including an impurity filter, a water storage box, a water pump III, a sterilization filter module, a valve III, a humidification device, a defrost water preheating box, a water pump IV, a hot water defrosting nozzle, a defrost water collection tray, a water pump I, a valve II, a condenser spray nozzle, a spray water collection tray 7, an auxiliary evaporating dish, a water pump V, and a condenser cleaning mechanism 1. An external water source supplies water to the water storage box through valve I and the impurity filter. The water storage box is connected to the sterilization filter module via water pump III, and then to the humidification device via valve III. The sterilization filter module is connected to the hot water defrosting nozzle via water pump IV. Defrost water is collected in the defrost water collection tray. The defrost water preheating box is connected to the impurity filter via water pump I. The water storage box is connected to the condenser cleaning mechanism 1 via water pump V, and it is connected to the condenser spray nozzle via valve II and water pump II. The spray water collection tray 7 simultaneously collects wastewater from condenser cleaning / spraying. The spray water collection tray 7 is connected to the auxiliary evaporating dish.

[0047] The impurity filter can filter impurities from external water sources, preventing blockages in subsequent water circuit components; defrost water is collected in the defrost water collection tray, and then recycled back to the impurity filter via the defrost water preheating box and water pump I, realizing defrost water recycling and reducing reliance on external water replenishment; the water storage box centrally supplies water to the humidifier, condenser cleaning mechanism 1, and spray nozzles, improving water usage efficiency; the sterilization and filtration module purifies the humidification water, ensuring refrigeration hygiene; the spray water collection tray 7 collects condenser cleaning / spray wastewater and connects it to the auxiliary evaporation dish, avoiding wastewater residue and providing support for stable system operation.

[0048] The condenser cleaning mechanism 1 includes a cleaning component 11 and a power component 12. The cleaning component 11 includes a fixed frame 111, a guide rod 112, a movable seat 113, a spray pipe 114, and a cleaning roller brush 115. The fixed frame 111 is located on one side of the condenser body 10, and there are two of them arranged symmetrically. The guide rod 112 is horizontally arranged and fixed between the two fixed frames 111. The movable seat 113 is arranged on the guide rod 112 and slidably connected to it. The spray pipe 114 is arranged on the movable seat 113. The side wall of the spray pipe 114 is provided with a plurality of spray holes 1141 evenly distributed about its axis. The spray pipe 114 is connected to the outlet of the water pump V through a rotary joint 2 and a hose (not shown in the figure). The cleaning roller brush 115 is rotatably mounted on the movable seat 113. The power component 12 is arranged on the fixed frame 111 and is used to drive the movable seat 113 to reciprocate along the guide rod 112.

[0049] The user can drive the movable seat 113 to reciprocate along the guide rod 112 via the power component 12. The spray pipe 114 and the cleaning roller brush 115 move synchronously with the movable seat 113. The spray pipe 114 is connected to the outlet of the water pump V through the rotary joint 2 and the hose, so as to provide water to the spray pipe 114. The water flowing into the spray pipe 114 is sprayed onto the condenser under the high pressure of the water pump V and the centrifugal force of the spray pipe 114. The cleaning roller brush 115 brushes the fins of the condenser. The spray pipe 114 and the cleaning roller brush 115 work together to clean the finned condenser efficiently and ensure the normal use of the condenser.

[0050] The power assembly 12 includes a motor 121 and a reciprocating screw 122. The motor 121 is fixed to one of the fixed brackets 111. The reciprocating screw 122 is rotatably mounted between the two fixed brackets 111, passing through and threadedly connected to the movable seat 113. One end of the reciprocating screw 122 is fixed to the output end of the motor 121. When the user starts the motor 121, the motor 121 drives the reciprocating screw 122, which is fixed to its output end, to rotate. Since the reciprocating screw 122 is threadedly connected to the movable seat 113, and since the movable seat 113 is slidably engaged with the guide rod 112, the movable seat 113 slides along the reciprocating screw 122, thereby facilitating the engagement of the spray pipe 114 and the cleaning roller brush 115 to thoroughly rinse and clean the condenser. During rotation, the spray holes 1141 on the side wall of the spray pipe 114 can spray and rinse the condenser fins from all directions, ensuring a cleaning effect.

[0051] The spray pipe 114 is rotatably mounted on the bottom of the movable base 113. The fixed frame 111 and the movable base 113 are jointly provided with a linkage component 3 for driving the spray pipe 114 and the cleaning roller brush 115 to rotate. The linkage component 3 includes a rack 31, a transmission gear 32, a driven gear 33, a synchronous pulley 34, and a synchronous belt 35. The rack 31 is fixed between the two fixed frames 111. The transmission gear 32 is rotatably mounted on the bottom of the movable base 113 and meshes with the rack 31. The driven gear 33 is fixedly sleeved on the spray pipe 114 and meshes with the transmission gear 32. There are two synchronous pulleys 34. The two synchronous pulleys 34 are respectively fixedly sleeved on the central shaft of the spray pipe 114 and the cleaning roller brush 115, and the synchronous belt 35 meshes with both synchronous pulleys 34.

[0052] During the operation of the motor 121 and the movement of the movable seat 113 along the reciprocating screw 122, the transmission gear 32 is rotated and installed at the bottom of the movable seat 113, and the transmission gear 32 meshes with the rack 31, thereby causing the transmission gear 32 to rotate, and driving the driven gear 33, spray pipe 114, synchronous pulley 34 and cleaning roller brush 115 to rotate synchronously, so that the spray pipe 114 and the cleaning roller brush 115 cooperate to thoroughly rinse and clean the condenser.

[0053] A clamping wheel 4 is rotatably mounted on the bottom of the movable seat 113, with its wheel surface abutting against the outer surface of the synchronous pulley 34. The spray hole 1141 is inclined, with its end closer to the axis of the spray pipe 114 higher than the end of the spray hole 1141 furthest from the axis of the spray pipe 114. The clamping wheel 4 increases the contact area between the synchronous pulley 34 and the synchronous belt 35, ensuring the transmission effect between the spray pipe 114 and the cleaning roller brush 115. The inclined arrangement of the spray hole 1141 reduces the probability of dirt cleaned by the cleaning roller brush 115 splashing into the spray pipe 114, thus reducing the probability of the spray hole 1141 becoming clogged.

[0054] The spray pipe 114 has an opening at its lower end, and a core column 5 is installed inside the spray pipe 114 to be inserted into its lower end. The upper end of the core column 5 is spherical and adjacent to the upper end of the spray pipe 114. The lower end of the core column 5 is detachably connected to the lower end of the spray pipe 114, and the diameter of the core column 5 increases from top to bottom. The arrangement of the core column 5 reduces the space inside the spray pipe 114 and shortens the distance between the inner wall of the spray pipe 114 and the core column 5, ensuring the water flow pressure sprayed from the spray hole 1141, which is beneficial for washing away the dust on one side of the condenser fins.

[0055] A vent hole 51 is provided through the core column 5, and a bottom cover 52 is provided at its lower end. Multiple air jet holes 53 communicating with the vent hole 51 are provided on the side wall of the core column 5. Each air jet hole 53 is provided with a one-way valve assembly 6. The diameter of the middle section of the air jet hole 53 is larger than the diameter of its two ends. An overflow hole 55 is provided on the inner wall of the middle section of the air jet hole 53, and a spherical curved surface 54 is provided on the side of the middle section of the air jet hole 53 near the axis of the core column 5. The one-way valve assembly 6 includes a spring 61 and a ball 62. One end of the spring 61 is fixed to the side of the inner wall of the air jet hole 53 near the axis of the core column 5, and the other end of the spring 61 is fixed to the ball 62. The ball 62 is pressed against the spherical curved surface 54.

[0056] After opening the bottom cover 52, the lower end of the core column 5 can be connected to an external high-pressure air source. The high-pressure airflow enters the core column 5 through the vent 51, then enters the jet hole 53, and breaks through the ball 62. The airflow is discharged from the overflow hole 55 through the outlet of the jet hole 53 and blown towards the outside of the core column 5 and between the spray pipe 114, thereby clearing the blocked parts with high-pressure airflow and ensuring the normal water spray cleaning function of the condenser cleaning mechanism 1.

[0057] The inner wall of the spray water collection tray 7 is fixed with an upper horizontal bar 71 and a lower horizontal bar 72. An upper rubber strip 73 and a lower rubber strip 74 are fixed to the bottom surface of the upper horizontal bar 71 and the top surface of the lower horizontal bar 72, respectively. A filter screen 8 is installed inside the spray water collection tray 7. The bottom surface of the upper rubber strip 73 and the top surface of the lower rubber strip 74 are pressed against the top surface and the bottom surface of the filter screen 8, respectively.

[0058] Both the upper rubber strip 73 and the lower rubber strip 74 are made of rubber material, and both have good elasticity, which ensures the stability of the filter screen 8 during use. This allows the filter screen 8 to fully perform its filtration function and ensures the purity of the condenser cleaning / spray wastewater.

[0059] A metal sheet 9 is fixed to the bottom of the movable seat 113, and a scraper 91 is fixed to the lower end of the metal sheet 9, with the top of the scraper 91 abutting against the top surface of the filter screen 8. During the movement of the movable seat 113 along the reciprocating screw 122, the metal sheet 9 and the scraper 91 move synchronously with the movable seat 113, thereby allowing the scraper 91 to clean debris from the surface of the filter screen 8. The metal sheet 9 has good elasticity; during the scraping process, the scraper 91 vibrates within a certain range, causing the scraper 91 and the filter screen 8 to vibrate. The filter screen 8 remains in a state of vibration for an extended period, allowing debris within the mesh of the filter screen 8 to be cleaned, further reducing the probability of the filter screen 8 becoming clogged and affecting the normal operation of the equipment.

[0060] This application also discloses a control method for a refrigerator water treatment system, including the following steps:

[0061] S1. Water tank replenishment control steps

[0062] When the system is turned on, valve I and the impurity filter are opened to replenish water according to the water level in the water storage box. Once the water level reaches the target, valve I is closed.

[0063] The water storage box has a built-in liquid level sensor. When the water level is 0, valve I is opened immediately to replenish water, and valve I is closed when the water level is 1 / 2.

[0064] S2, Defrosting Mode Control Steps

[0065] During operation, the system uses temperature sensors and frost thickness sensors on the evaporator surface to identify defrost signals in real time: when the sensors detect that the frost thickness on the evaporator exceeds 5mm, or the evaporator surface temperature is below -12℃ for more than 1 hour, it determines that "defrosting is required" and triggers the defrost mode; if the above conditions are not met, the current cooling or standby state is maintained and the defrost signal continues to be identified in real time.

[0066] After the defrosting mode is activated, the system first shuts down the refrigeration fans in the refrigerator and freezer compartments. Then, water pump IV is activated—water from the storage tank is pumped to the defrost water preheating box. The heating element (30-50W) inside the preheating box initially heats the water to 30-35℃. The preheated water then flows through the auxiliary heating wire (i.e., the water temperature compensation heating wire, 50-80W), where it is heated to 45-55℃. Finally, the hot water is sprayed onto the evaporator through the hot water defrosting nozzles above the evaporator (3-5 nozzles evenly distributed along the evaporator coils). During defrosting, if the water temperature sensor detects that the defrost water temperature is below 40℃, the power of the auxiliary heating wire is automatically increased to 80W to ensure effective defrosting. If the water temperature remains within the 45-55℃ range, the power of the auxiliary heating wire remains stable. The defrosting water generated during defrosting flows along the surface of the evaporator to the defrosting water collection tray below. The collected defrosting water flows back to the defrosting water preheating box through pipes, mixes with newly added water, and participates in defrosting again, realizing the recycling of defrosting water. At the same time, the system turns on the antifreeze heating wire (power 10-15W) at the bottom of the defrosting water collection tray to prevent the defrosting water from freezing and clogging the pipes in low-temperature environments.

[0067] S3, Humidification Mode Control Steps

[0068] This mode is activated only when the system is not in the defrosting stage. The system monitors the humidity of the refrigerator compartment in real time through a humidity sensor inside the refrigerator compartment (accuracy ±3%RH). If the humidity is detected to be lower than the set value (usually set to 85%-90%RH, which can be adjusted according to user needs), the humidification mode is triggered. The system automatically turns on water pump III and valve III. Water in the water storage box is pumped by water pump III to the sterilization and filtration module (built-in UV-C sterilization lamp and activated carbon filter, sterilization rate ≥99%, removing odors from the water). The purified water enters the humidification device (such as an ultrasonic atomizer, atomization volume of 10-15mL / h). The atomized water vapor is evenly diffused into the refrigerator compartment to achieve food preservation.

[0069] During humidification, the humidity sensor continuously monitors the humidity in the refrigerator compartment. When the humidity reaches the set value, the system immediately shuts off water pump III and valve III, exiting the humidification mode. If the system receives a defrosting signal (i.e., triggers step S2) during humidification, the humidification mode will be exited first—water pump III and valve III will be shut off first, and then the system will switch to the defrosting mode to ensure that the defrosting function is executed first and to avoid conflict between the two modes affecting system performance.

[0070] S4. Condenser Spray Mode Control Steps

[0071] The system monitors the condenser temperature in real time using a temperature sensor (measurement range -20℃ to 80℃) on the condenser fin surface. If the detected temperature reaches the set threshold (usually set at 40℃, but can be adjusted to 38℃ under high-temperature conditions), it determines that "spray cooling is required" and triggers the condenser spray mode. The system automatically turns on water pump II and valve II—water in the water storage box is pumped by water pump II (flow rate 1.5-2L / min) to the condenser spray nozzles (2-3 rows of perforated spray pipes with a diameter of 0.8-1mm are arranged along the condenser fin array), forming a uniform spray water film covering the fin surface, enhancing the heat exchange between the condenser and the airflow generated by the fan, and accelerating the evaporation of defrost water (solving the problem of defrost water residue in high-humidity environments).

[0072] Wastewater generated during the spraying process (containing a small amount of dust on the fin surface) flows along the condenser surface to the spray water collection tray 7 below. The collected wastewater is then piped into the auxiliary evaporation dish. The auxiliary evaporation dish has built-in heating elements (15-20W power) to accelerate wastewater evaporation and prevent wastewater residue. If the condenser temperature drops below the set threshold (usually set to 35℃), the system determines that the temperature has met the standard, immediately shuts off water pump II and valve II, and exits the condenser spraying mode. If the temperature does not meet the standard, the spraying mode is maintained until the temperature meets the requirements.

[0073] S5, Condenser Cleaning Mode Control Steps

[0074] The system is pre-set to a fixed time interval (usually set to every 15 days, which can be flexibly adjusted according to the dust concentration of the environment; for example, it can be shortened to every 7 days in a dusty environment). When the system time reaches the set interval, the condenser cleaning mode is automatically triggered. Since this mode has a higher priority than the condenser spray mode, if the system is in the condenser spray mode described in S4 when the cleaning mode is triggered, the system will first automatically shut off water pump II and valve II, stop spraying and exit the condenser spray mode, and then officially enter the condenser cleaning mode.

[0075] After the cleaning mode is activated, the system simultaneously performs two core operations: First, water pump V is turned on, and clean water in the water storage tank is delivered to the spray pipe 114 of the condenser cleaning mechanism 1 through water pump V (output pressure set to 0.25-0.35MPa, adaptable to cleaning requirements) via hose and rotary joint 2; Second, the power component 12 of the condenser cleaning mechanism 1 is activated—the motor 121 fixed on one of the fixed frames 111 is powered on and runs. The output end of the motor 121 drives the reciprocating screw 122 fixedly connected to it to rotate (the reciprocating screw 122 is rotatably installed between two symmetrically arranged fixed frames 111). Since the reciprocating screw 122 passes through the movable seat 113 and is threadedly connected to the movable seat 113, and the movable seat 113 is limited by the guide rod 112 (horizontally fixed between the two fixed frames 111), the rotation of the reciprocating screw 122 is converted into the horizontal reciprocating sliding of the movable seat 113 along the guide rod 112 (the sliding speed is set to 5-8mm / s to ensure thorough cleaning).

[0076] During the sliding process of the movable seat 113, the linkage component 3 synchronously drives the spray pipe 114 and the cleaning roller brush 115 to work together: the rack 31 fixed between the two fixed frames 111 meshes with the transmission gear 32 rotatably mounted at the bottom of the movable seat 113. When the movable seat 113 moves, it drives the transmission gear 32 to rotate around its own axis; the transmission gear 32 meshes with the driven gear 33 fixedly sleeved on the spray pipe 114, thereby driving the spray pipe 114 to rotate at the bottom of the movable seat 113 (the rotation speed matches the sliding speed of the movable seat 113, about 15-20 r / min); at the same time, the two synchronous wheels 34 fixed on the central shaft of the spray pipe 114 and the cleaning roller brush 115 are respectively driven by the synchronous belt 35, so that the cleaning roller brush 115 and the spray pipe 114 keep rotating synchronously. The bristles of the cleaning roller brush 115 are closely attached to the surface of the condenser fins, and the mechanical brushing of the dust accumulated in the gap between the fins is achieved by the reciprocating sliding of the movable seat 113.

[0077] During rotation, the multiple inclined spray holes 1141 on the side wall of the spray pipe 114 (the end closer to the axis of the spray pipe 114 is higher than the end farther from the axis, with an inclination angle of 15-20° to ensure that the water flow obliquely impacts the gap between the fins) continuously spray high-pressure water to ensure the cleanliness of the water path.

[0078] Wastewater generated during the cleaning process (containing dust washed off the fin surface) flows along the condenser surface and collects in the spray water collection tray 7 below. A filter screen 8 (80-100 mesh, used to filter dust particles in the wastewater) is fixed to the inner wall of the spray water collection tray 7 via upper horizontal bars 71, lower horizontal bars 72, and corresponding upper and lower rubber strips 73 and 74, preventing large particles from entering the subsequent auxiliary evaporator and causing blockage. Simultaneously, a scraper 91 is connected to the lower end of a metal plate 9 fixed to the bottom of the movable seat 113. The top of the scraper 91 is in close contact with the top surface of the filter screen 8. As the movable seat 113 slides back and forth, the scraper 91 moves synchronously along the surface of the filter screen 8, scraping away the dust particles accumulated on the filter screen 8 and preventing blockage that could affect wastewater flow.

[0079] The system monitors the water volume in real time through a level gauge built into the auxiliary evaporating dish (connected to the spray water collection tray 7 to receive filtered cleaning wastewater). When the level gauge detects that the water volume in the auxiliary evaporating dish reaches 3 / 4 of its rated volume, it determines that "the wastewater collection volume meets the standard," and the system immediately performs a stop operation: first, it shuts down water pump V to stop supplying water to the condenser cleaning mechanism 1; then, it shuts down motor 121 of the power component 12, the reciprocating screw 122 stops rotating, the movable seat 113 stops sliding, and the spray pipe 114 and cleaning roller brush 115 stop rotating synchronously; at this point, the condenser cleaning mode is completely exited. Subsequently, the heating element (power 15-20W) built into the auxiliary evaporating dish automatically turns on to accelerate the evaporation of internal wastewater, reserving space for wastewater collection in the next cleaning or spray mode.

[0080] This control method ensures system water supply by replenishing the water tank on demand, activating water pump IV for hot water defrosting and adjusting the water temperature to achieve defrosting, activating humidification on demand when not defrosting, monitoring condenser temperature and spraying as needed, and activating condenser cleaning at fixed intervals with reasonable mode priorities. This method can stabilize system operation, achieve defrosting, ensure refrigeration humidity, and maintain condenser performance.

[0081] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A refrigerator water treatment system, characterized in that: Includes impurity filter, water storage box, water pump III, sterilization filter module, valve III, humidification device, defrost water preheating box, water pump IV, hot water defrosting nozzle, defrost water collection tray, water pump I, valve II, water pump II, condenser spray port, spray water collection tray (7), auxiliary evaporation dish, water pump V and condenser cleaning mechanism (1); An external water source supplies water to the water storage box via valve I and an impurity filter. The water storage box is connected to the sterilization and filtration module via water pump III, and then to the humidification device via valve III. The sterilization and filtration module is connected to the hot water defrosting nozzle via water pump IV. The defrosting water is collected in the defrosting water collection tray and the defrosting water preheating box is connected to the impurity filter via water pump I. The water storage box is connected to the condenser cleaning mechanism (1) via water pump V. It is connected to the condenser spray port via valve II and water pump II. The spray water collection tray (7) collects the wastewater from condenser cleaning / spraying. The spray water collection tray (7) is connected to the auxiliary evaporation dish. The condenser cleaning mechanism (1) includes a cleaning component (11) and a power component (12). The cleaning component (11) includes a fixed frame (111), a guide rod (112), a movable seat (113), a spray pipe (114), and a cleaning roller brush (115). The fixed frame (111) is located on one side of the condenser body (10), and there are two of them arranged symmetrically. The guide rod (112) is horizontally set and fixed between two fixed frames (111); the movable seat (113) is set on the guide rod (112) and slidably connected to it; the spray pipe (114) is set on the movable seat (113); the side wall of the spray pipe (114) is provided with a plurality of spray holes (1141) evenly distributed about its axis; and the spray pipe (114) is connected to the outlet end of the water pump V through a rotary joint (2) and a hose; the cleaning roller brush (115) is rotatably mounted on the movable seat (113); the power assembly (12) is set on the fixed frame (111) and is used to drive the movable seat (113) to reciprocate along the guide rod (112); The power assembly (12) includes a motor (121) and a reciprocating screw (122). The motor (121) is fixed on one of the fixed brackets (111). The reciprocating screw (122) is rotatably mounted between the two fixed brackets (111), passes through the movable seat (113) and is threadedly connected to it. One end of the reciprocating screw (122) is fixed to the output end of the motor (121). The spray pipe (114) is rotatably mounted on the bottom of the movable seat (113). The fixed frame (111) and the movable seat (113) are jointly provided with a linkage assembly (3) for driving the spray pipe (114) and the cleaning roller brush (115) to rotate. The linkage assembly (3) includes a rack (31), a transmission gear (32), a driven gear (33), a synchronous pulley (34), and a synchronous belt (35). The rack (31) is fixed between two fixed brackets (111), the transmission gear (32) is rotatably mounted on the bottom of the movable seat (113), and the transmission gear (32) meshes with the rack (31). The driven gear (33) is fixedly sleeved on the spray pipe (114) and meshes with the transmission gear (32). There are two synchronous pulleys (34), which are fixedly sleeved on the central shaft of the spray pipe (114) and the cleaning roller brush (115), respectively, and the synchronous belt (35) meshes with both synchronous pulleys (34). The spray pipe (114) has an opening at the lower end, and a core column (5) is installed inside the spray pipe (114) and is inserted into it. The upper end of the core column (5) is spherical and adjacent to the upper end of the spray pipe (114). The lower end of the core column (5) is detachably connected to the lower end of the spray pipe (114), and the diameter of the core column (5) increases from top to bottom. A vent hole (51) is provided through the core column (5), and a bottom cover (52) is provided at its lower end. Multiple jet holes (53) communicating with the vent hole (51) are provided on the side wall of the core column (5). A one-way valve assembly (6) is provided in each jet hole (53). The diameter of the middle section of the jet hole (53) is larger than the diameter of its two ends. An overflow hole (55) is provided on the inner wall of the middle section of the jet hole (53), and a spherical curved surface (54) is provided on the side of the middle section of the jet hole (53) close to the axis of the core column (5). The one-way valve assembly (6) includes a spring (61) and a ball (62). One end of the spring (61) is fixed to the inner wall of the jet hole (53) near the axis of the core column (5), and the other end of the spring (61) is fixed to the ball (62), and the ball (62) abuts against the spherical curved surface (54).

2. The refrigerator water treatment system according to claim 1, characterized in that: The bottom of the movable seat (113) is rotatably mounted with a clamping wheel (4), and the wheel surface of the clamping wheel (4) is in contact with the outer surface of the synchronous wheel (34); the spray hole (1141) is inclined, and the end of it close to the axis of the spray pipe (114) is higher than the end of the spray hole (1141) away from the axis of the spray pipe (114).

3. The refrigerator water treatment system according to claim 1, characterized in that: The inner wall of the spray water collection tray (7) is fixed with an upper horizontal bar (71) and a lower horizontal bar (72). The bottom surface of the upper horizontal bar (71) and the top surface of the lower horizontal bar (72) are respectively fixed with an upper rubber strip (73) and a lower rubber strip (74). A filter screen (8) is installed inside the spray water collection tray (7). The bottom surface of the upper rubber strip (73) and the top surface of the lower rubber strip (74) are respectively pressed against the top surface and the bottom surface of the filter screen (8).

4. A refrigerator water treatment system according to claim 3, characterized in that: A metal sheet (9) is fixed at the bottom of the movable seat (113), and a scraper (91) is fixed at the lower end of the metal sheet (9), with the top of the scraper (91) abutting against the top surface of the filter screen (8).

5. A control method for a refrigerator water treatment system according to any one of claims 1-4, characterized in that, Includes the following steps: S1. When the system is turned on, valve I and the impurity filter are opened to replenish water according to the water level in the water storage box. After the water level reaches the standard, valve I is closed. S2. Identify the defrost signal, turn on water pump IV to perform hot water defrosting, collect the defrost water into the collection tray, and adjust the water temperature through the defrost water preheating box and auxiliary heating wire. If not defrosting, maintain the current state. S3. During the non-defrosting stage, when the humidity in the refrigerator compartment is lower than the set value, water pump III and valve III will be turned on to humidify. Once the target is reached, they will be turned off. During defrosting, the humidification mode will be exited first. S4. Monitor the condenser temperature. If it meets the standard, turn on water pump II and valve II for spraying. The wastewater is collected in the collection tray and auxiliary evaporation dish. If the temperature does not meet the standard, maintain it. S5. Activate the condenser cleaning mode at fixed intervals, turn on water pump VI, and turn off the auxiliary evaporator when the water level reaches 3 / 4. Exit the spray when the cleaning mode is activated.

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